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3 years ago

Calculate the velocity of an ocean wave that has a wavelength of 5 meters and a frequency of 2 Hertz (Hz).

Chemistry

2 answers:

bulgar [2K]3 years ago

4 0

Answer:

Option C. 10m/s

Explanation:

Data obtained from the question include:

Wavelength = 5m

Frequency = 2Hz

Velocity =..?

Velocity of a wave is related to the wavelength and frequency by the following equation:

Velocity = wavelength x frequency

With the above equation, we can easily calculate the velocity of the ocean wave as follow:

Velocity = 5 x 2

Velocity = 10m/s

From the calculation made above, we can see that the velocity of the ocean wave is 10m/s.

dangina [55]3 years ago

4 0

Answer:

10 m/s

Explanation:

Edge

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What is the final, balanced equation that is formed by combining these two half reactions?

lara31 [8.8K]

Answer: Balanced equation that is formed by combining these two half reactions is $Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O$ .

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example, $Cu \rightarrow Cu^{2+} + 2e^{-}$

$NO^{-}_{3} + 2e^{-} + 2H^{+} \rightarrow NO^{-}_{2} + H_{2}O$

On cancelling the common species from both these half-reactions, the complete balanced equation will be as follows.

$Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O$

Thus, we can conclude that balanced equation that is formed by combining these two half reactions is $Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O$ .

7 0

2 years ago

Write a balanced half-reaction for the reduction of permanganate ion mno−4 to solid manganese dioxide mno2 in acidic aqueous sol

Svetlanka [38]

The half-reaction includes either the reduction or the oxidation reaction of the redox reactions. In acidic solution permanganate ion will react with hydrogen ion to yield manganese ion and water.

<h3>What are Redox reactions?</h3>

Redox or oxidation-reduction reactions are the chemical reactions in which the oxidation and the reduction of the chemical species occur simultaneously.

Permanganate (VII) ion is a strong oxidizing agent and gets easily reduced to manganese ion in presence of the hydrogen ion in an acidic solution.

The balanced half-reaction for reduction is shown as,

$\rm MnO_{4}^{-} \; (aq)+ 8H^{+} \; (aq)+ 5e^{-} \rightarrow Mn^{2+} \; (aq)+ 4H_{2}O \; (l)$

Learn more about reduction reactions here:

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8 0

1 year ago

A(n) ____________________ is a negatively charged subatomic particle.

gtnhenbr [62]

An electron is a negatively charged subatomic particle, whereas a proton is positively charged, and a neutron has no charge.

8 0

2 years ago

The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of wate

yuradex [85]

Answer:

A.The concentration of water is greater outside the cell than inside the cell.

Explanation:

The contractile vacuole of certain organisms functions to regulate water flow in and out of the cell. It does this by storing excess water that comes into the cell. In the case of this organism with a filled up contractile vacuole, it means water is flowing into the cell.

Naturally, water will flow into a living cell when an osmotic gradient i.e. difference in concemtration, has been created between intracellular and extracellular solutions. Osmosis involves movement of substances from a region of high water concentration to a region of low water concentration. This means that if water is flowing into the cell, which is stored by the contractile vacuole, the concentration of water must be greater outside the cell than inside.

6 0

2 years ago

Help me due tomorrow :,)

lesya [120]

Zinc displaces copper

It means

Zinc is more reactive than copper

Zinc+Copper sulphate--> Zinc sulphate+Copper

No reaction because

Magnesium is more reactive than zinc

Reaction occurs

Iron is more reactive than copper
Magnesium is more reactive than iron

Order:-

Cu<Fe<Zn<Mg

3 0

2 years ago